: In studying whether a sequence of numbers is random, one can construct
: what is called a Noise
: Sphere(http://mathworld.wolfram.com/NoiseSphere.html). When I tried this
: out, I got a non-uniform distibution of points concentrated along
: the verticle axis (phi ~= 0) of the sphere. Initially I thought that this
: was an artifact of my pseudo-random number generator, but I later tried
: this out with "real" random numbers and got the same distribution.
: Looking at the mapping(as it is shown on the web page):
: theta = 2 * Pi * Random[]
: phi = Pi * Random[]
: r = Sqrt[Random[]]
: I thought that the problem was with the distribution in phi. Is this a
: mistake in the map? Or am I misunderstanding the what a Noise spehere is
: supposed to be? Thanks for the help!
: --
: ___________________________________________________________________________
: Geoff Steeves // University of Alberta Physics //
: http://www.ualberta.ca/~gsteeves
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